Possible Anal?

My boyfriend, Tommy, and I still live at home with our parents. This is great when you're saving for a mortgage deposit, but not so good for our sex life. So we have to mostly rely on Tommy's car.

Sex in a car can be difficult. Even worse when it's a Fiat 500. And to make matters worse Tommy has been going on and on and on about trying anal. Now, I'm a willing partner in most things but I draw the line at back door sex. To me it's not natural. Not something you would ask a nice girl to do. And I can never see where the pleasure is for the female. So, I've always given him a big fat NO!.

When you've tried every position known to man you reach a compromise. This is ours.

Tommy, sits in the middle of the two front seats. I straddle him. A knee on each seat and my head out the sun-roof. With a bit of jiggling about he gets his head between my legs and does the business with his tongue. I can then slide down and get him inside me. This way, most times, I get to cum twice. I'm more than a little selfish when it comes to sex. Then, quite recently, something rather weird happened.

There was a bit of a twanging sound when I was getting my leg over but neither of us really noticed. He'd brought me on nicely, he's good with his tongue. I got him partly inside me when something lodged itself against my bum hole. I knew straight away that it was the gear knob and it was bloody uncomfortable. However, as you can imagine, Tommy was in a right old state at this point so, somehow, I managed to manoeuvre the gear knob away from my bum. Now, Tommy likes me to ride him like a horse. Pulling out almost to the tip then sliding back in. However, when I tried to do this the gear knob slid along the valley of my buttocks. At first it was a bloody nuisance but as I moved up and down I began to kind of enjoy it. The best part was when it slid across my bum hole. So, living a bit dangerously, I managed to get the knob just touching my hole it was all very exciting. Now, when we're getting close we start to really go for it. I knew Tommy was almost there and I was desperate to cum too. That's when it happened. I pushed down too far and the knob went right up my bum. I cried out, more in surprise than any pain, which brought both of us on, together. It was my best ever orgasm.

Now here is my dilemma, Tommy has no idea what happened. I'm desperate to try it again but it's all very difficult. Try as I might the gear lever is always in the wrong position, nowhere near my bum. I can't tell Tommy, particularly if I admit to enjoying it, because he'll want to go straight into anal and I don't think I'm ready for him up my bum just yet. He's hung like a horse.

Any suggestions????